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Cooling system

Tiny
LENLEMON0577
  • MEMBER
  • 2000 BMW E39
  • 2.8L
  • 6 CYL
  • 2WD
  • AUTOMATIC
  • 180,000 MILES
Hi there, I am losing about a half cup of coolant after a drive no water in the oil. I have just replaced the expansion tank as well. I have only had to top it up twice car maxed out today at about 89 degrees on a thirty degree day. Thanks.
Monday, November 20th, 2017 AT 6:48 PM

2 Replies

Tiny
KHLOW2008
  • MECHANIC
  • 41,814 POSTS
There is a minor leak somewhere and a pressure test would help to determine where the leak is coming from. First look for signs of coolant residue, usually radiators are common leakage area for BMW. Other areas to check would be the water pump, hose joints and hoses.
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Monday, November 20th, 2017 AT 11:26 PM
Tiny
RENEE L
  • ADMIN
  • 1,260 POSTS
Hi LENLEMON0577,

I am sending you a link to a helpful and informative article from this site. This article features a step by step guide, pictures and a video on how to pressure test a cooling system.

https://www.2carpros.com/articles/radiator-pressure-test

Thank you for visiting 2CarPros.

All the best,

Renee
Admin
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Thursday, November 23rd, 2017 AT 12:56 PM

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